Module version 

Version string and update-check helpers. Version checker — non-blocking startup check for newer crate versions.

Spawns a background task that queries crates.io for koda-cli. If a newer version exists, prints a one-line hint after the banner. Never blocks startup — the REPL is ready immediately.

Behavior

• Runs once per session at startup
• Timeout: 3 seconds (fails silently on slow networks)
• Compares semver::Version of current binary vs latest on crates.io
• Shows: 📦 Update available: 0.2.1 → 0.3.0 (cargo install koda-cli)

Functions

crate_name

The crate name, useful for building install commands.

spawn_version_check

Spawn a background version check. Returns a handle that can be awaited.

update_available

Check whether latest is newer than the current version. Returns Some((current, latest)) if an update is available.